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reasonable diameter coherent with the aforementioned pressure drops was preliminarily
calculated, so as to position the corresponding point (identified in the labels) on the graph.
Figure 11. Distribution costs in the scenario of connection costs covered by the private customers
Figure 12. Distribution costs in the scenario of connection costs covered by the company owning
and operating the DH network
Considering that a feasibility condition for a DH pipe/trench is usually indicated as a minimum
1.5-1.8 MWh/m linear heat density (corresponding to distribution costs not higher than 8-10
€/GJ, as evident in Figures 11 and 12), we may easily observe that:
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